OpenCPN Beta Version 3.3.1419 Released

[Littlechay]

Originally Posted by stedy

Hi.
Your date seams a bit strange.
Spec:$--MDA,x.x,I,x.x,B,x.x,C,x.x,C,x.x,x.x,x.x,C,x.x,T,x. x,M,x.x,N,x.x,M*hh<CR><LF>
Yours:$IIMDA,102200.0,P,1.02,B,5.4,C,6.3,C,,,,C,22 9.29,T,,M,14.38,N,7.40,M*24
The first field should contain pressure in inch of mercury..




Which instrument do you use?

The instrument is an airmar DST200 NMEA 2000 transducer

The NMEA2000 is translated by an actisense NGW and I have been in touch with Actisense on this and say that MDA is translated but that barometric pressure is not - confused? I am!

I have no idea what inches of mercury would look like as a number in this case but the second field set 1.02,B is correct 1.02Bar (1020mB) so is it possible to use that?

What sentence is OCPN using for barometric pressure? MMB?

Regards
Chris

[stedy]

My addon for Dashboard use the MDA sentence field 3 and 4... So i quess your setence should work. If i change the end of your sentence from M*24 to M,*24 then it work..

I have found a solution but not sure if this is the right thing to do...
if i change line 90 in mda.cpp from:

if ( sentence.IsChecksumBad( sentence.GetNumberOfDataFields() ) == TRUE || FALSE )

TO

if ( sentence.IsChecksumBad( sentence.GetNumberOfDataFields()+1 ) == TRUE || FALSE )

then it works. But im not sure if its my code or the code in GetNumberOfDataFields that is wrong.
Or maybe the checksum provided in your sentence..

[stedy]

Littlechay have you tried to disable checksum control in the communication setup, for the port providing the MDA sentence?

[Gilletarom]

Hello Dave,

I loaded into O, for the English coastline, raster charts VisitMyHarbour (With dongle), NV-Verlag raster chart (with the plugin NV-Verlag), the CM93 and S63 charts test plugin S-63. .

I indicate that all is well. The cahrts are displayed correctly and it is possible to display, simultaneously, all sorts of chart.

BUT:
If I display a NV-Verlag chart and if I double click on this chart, then the "Object query" window opens ( it is empty ).

This does not occur with raster charts VisitMyHarbour.

Obviously, if I display a S63 or a CM93 chart, the same window appears but it is not empty. This is normal.

B.R. Gilletarom.

[bcn]

Gilletarom,

ObjectQuery should not make any sense with raster charts - there are no Objects - just grey, black or white points (or colored of course). Or do I miss something?
Or do you want to say that in the NV case the Object Windows opens despite being a raster chart?

Hubert

[Gilletarom]

Hello Hubert,

Originally Posted by bcn

Gilletarom,
ObjectQuery should not make any sense with raster charts - there are no Objects - just grey, black or white points (or colored of course). Or do I miss something?

Hubert, for me, you are right.

Or do you want to say that in the NV case the Object Windows opens despite being a raster chart?

Hubert

It is not normal that this window appear in this case.

Do you want that I open a task ?

[Gilletarom]

Hello All,

Sorry, what I say in this post is off topic.

For some time I have a problem to add my images.

When I log in, the pictures I attached to my post does not appear at the bottom of the post. But there is "Rotate Image".

When I log out, the images appear .....

What about?

Thank by advance.

[bcn]

Yes to #36 - even if this is a bit exotic (my opinion)

But the great thing is that you can test having all that different chart sources at hand at the same time.

Seems to me that just O can do that....

[Littlechay]

Originally Posted by stedy

Littlechay have you tried to disable checksum control in the communication setup, for the port providing the MDA sentence?

I have tried it both enabled and disabled in the OCPN connections dialogue and it makes no difference; which implies that the checksum is seen as good by OCPN, other then that I have no control over it.

The data comes in off the N2K network via an Actisense NGW1 gateway.

Chris

[bdbcat]

stedy/LittleChay...

I think stedy's analysis is correct . The code in mda.cpp is wrong.

line 90 should be:

   if ( sentence.IsChecksumBad( sentence.GetNumberOfDataFields() + 1) == TRUE || FALSE )

I will correct for next Beta.

Thanks
Dave

[Littlechay]

Originally Posted by bdbcat

stedy/LittleChay...

I think stedy's analysis is correct . The code in mda.cpp is wrong.

Great, so will that also help pull wind data from MDA ?

What sentence is OCPN using for wind data for the wind history which I have never been able to get to display anything even though I have the true wind dial showing data?

Chris

[bdbcat]

Chris...

Well, it should be using MWD.
Or, it will use MWV if that is sending True, not Relative wind info.

But, there is a bug...sigh....
In MWD, the info goes to the True wind dial OK. But does not get sent to the history graph.

Easy fix for next Beta.

Thanks for your patience.
Dave

[Littlechay]

Originally Posted by bdbcat

Chris...

Well, it should be using MWD.
Or, it will use MWV if that is sending True, not Relative wind info.

But, there is a bug...sigh....
In MWD, the info goes to the True wind dial OK. But does not get sent to the history graph.

Easy fix for next Beta.

Thanks for your patience.
Dave

Ok thats great news. No problem glad that i can help by providing feedback.

I'll experiment with tweaking the PGNs on the PB200 and see if i can get MWV to send true. It will be a juggling act between what the sensor transmits on the N2k network and how the NGW1 converts the PGNs to 0183 sentences.

Chris

[Littlechay]

Originally Posted by stedy

Hi.
Your date seams a bit strange.
Spec:$--MDA,x.x,I,x.x,B,x.x,C,x.x,C,x.x,x.x,x.x,C,x.x,T,x. x,M,x.x,N,x.x,M*hh<CR><LF>
Yours:$IIMDA,102200.0,P,1.02,B,5.4,C,6.3,C,,,,C,22 9.29,T,,M,14.38,N,7.40,M*24
The first field should contain pressure in inch of mercury..

I got this from Actisense technical support, which explains the funny first number

"What is actually happening is the value is in Pascals (like in NMEA 2000).
The 0183 spec requires Inches of Mercury so the value is incorrect.
The value for Bars is accurate and correctly formatted."

Chris

[Hakan]

Originally Posted by bdbcat

But, there is a bug...sigh....
Dave

Dave.. And while you're in the neighbourhood there's a bug in the MWV handling as well: The user unit settings are not reflected.
My suggestion for a fix which I've tested for a while now is in flyspray:
FS#1342 : Bug fix for the MWV sentence. User wind speed unit option don't work